, massachuse, part of a megalopolis locahave taken root in older seoinner-city neighborhoods.n recent decades, these neighborhoods deteriorated, with a downward spiral in infrastructure, services and oppornities. but w stons bouncing back. with a downward spiral we'll see how relative location to the central business district, or cbd, is important to the development of these neighborhoods-- how so much can ride on their being part of federally-funded enterprise zones and how geographic information systems, or gis, can be used in addressing some difficult urban economic and social issues. boston, massachusetts. once a great port, it's now a world leader in high tech, higher education, bmedicine and finance. but like most u.s. cities, boston lost many jobs and middle-class residents to the suburbs. it's a regional problem-- part of the widening gap between the wealthiest and the poorest americans. this disparity has glaring spatial symptoms. ( rap music playing from car stereo ) behind e inr-cieighrhoods ll of unemployed and underemployed residents. in the heart of the roxbury n